British Empire = success
1. The UK has many dominion immigrants because of the British Empire (Canada also). Why? They are the richest countries in the Dominion.
2. A list of the problems currently in the Middle East date back the the WW1 British and French mandates of the armistice and the
Treaty of Lausanne you imperialists (haha) split up the borders with no regard to the religious and tribal land rights of the inhabitants.
Much of the conflict we see today is the result of European colonialism and imperialist ambitions. That said, the primarily USA led invasions in the past 14 years fucked things up worse -- with oil resource security being the true core of the invasions. The price of Gasoline was as low as $2.12 /US gallon (3.8 Liters) yesterday.
As to North America's success: North America from the Native peoples (North American Indians) perspective or the enslaved Africans was a big time fail. However, the success you see in North America what built by waves of immigration who worked for their success, and the success of their newly adopted countries success, and still do to this day.
Most immigrants come to the USA to work and better themselves. On welfare an immigrant family might get $2,000 a month in social services -- that is just a poverty line existence -- the USA poverty line is $20,090 for a family of 3.